Serial Line Connection - Videotec MAXIMUS MHX Manuel D'instructions

7.3.10 Serial line connection

The installation is type TNV-1, do not
connect it to SELV circuits.
In order to reduce the risk of fire, only use
cable sizes greater than or equal to 26AWG
(0.13mm²).
The product has an RS-422 serial one-way internally
terminated communication line. The line works with
PELCO D (2400baud, 9600baud) or VIDEOTEC MACRO
(9600baud, 38400baud), maximum distance of
1200m (3937ft).
Control
keyboard
Fig. 35
The line can be configured using the board's DIP1
selector dip-switch.
DIP 1
ON
ON
1 2 3
Fig. 36
MNVCMHX_1432_EN
RS-485
X1
4 5 6 7 8
Pass the relays cables through the entry device.
Pull out the J12 removable connector from the CPU
board and connect the cables as shown in the table.
CONNECTION OF THE RS-485 OUTPUT
Serial line Terminal
RS-485 A (+)
B (-)
AGND
Tab. 8
Insert the wired connector into the connector and
connect the cables with a cable tie.
J12
Fig. 37
When the dip-switch rocker is up it
represents the value 1 (ON). When the
dip-switch rocker is down it represents the
value 0 (OFF).
Description
RS-485 line
RS-485 line
Reference line
RS-485
29